| Contributors | Affiliation | Role |
|---|---|---|
| Johnson, Gregory C. | National Oceanic and Atmospheric Administration (NOAA-PMEL) | Principal Investigator |
| Hales, Burke | Oregon State University (OSU-CEOAS) | Contact |
| Gegg, Stephen R. | Woods Hole Oceanographic Institution (WHOI) | BCO-DMO Data Manager |
SO-GasEx 1 dbar CTD profiles
Bin-averaged values for T, conductivity, S, and Oxygen,
based on the SBE in-water electrode measurements.
See: SO-GasEx cruise report, Section 5.7 ppgs 36-46
Sample CTD Header File:
* Sea-Bird SBE 9 Data File:
* FileName = C:GasExdatage03.hex
* Software Version Seasave V 7.14c
* Temperature SN = 4211
* Conductivity SN = 2887
* Number of Bytes Per Scan = 34
* Number of Voltage Words = 4
* Number of Scans Averaged by the Deck Unit = 1
* Append System Time to Every Scan
* System UpLoad Time = Mar 10 2008 14:51:02
** Cruise: GasEx 2008
** Ship: NOAA RONALD H. BROWN
** Station/Cast Number: 03
** Nominal Latitude: 50 43.876
** Nominal Longitude: 38 33.285
# nquan = 12
# nvalues = 75194
# units = specified
# name 0 = timeS: Time, Elapsed [seconds]
# name 1 = prDM: Pressure, Digiquartz [db]
# name 2 = depSM: Depth [salt water, m]
# name 3 = t068C: Temperature [ITS-68, deg C]
# name 4 = t168C: Temperature, 2 [ITS-68, deg C]
# name 5 = c0mS/cm: Conductivity [mS/cm]
# name 6 = c1mS/cm: Conductivity, 2 [mS/cm]
# name 7 = sbeox0V: Oxygen Voltage, SBE 43
# name 8 = sbeox0Mm/Kg: Oxygen, SBE 43 [umol/Kg]
# name 9 = par: PAR/Irradiance, Biospherical/Licor
# name 10 = wetStar: Fluorescence, Wetlab Wetstar [mg/m^3]
# name 11 = flag: 0.000e+00
# span 0 = 0.000, 3133.042
# span 1 = -0.474, 502.611
# span 2 = -0.470, 497.698
# span 3 = 0.5986, 7.8632
# span 4 = 0.6005, 7.2611
# span 5 = 0.038490, 33.003805
# span 6 = 0.058432, 32.964855
# span 7 = 1.8694, 3.9194
# span 8 = 164.630, 390.668
# span 9 = 5.4693e+02, 9.9990e+03
# span 10 = -0.4895, 15.3250
# span 11 = 0.0000e+00, 0.0000e+00
# interval = seconds: 0.0416667
# start_time = Mar 10 2008 14:51:02
# bad_flag = -9.990e-29
# sensor 0 = Frequency 0 temperature, primary, 4211, 08-Nov-07
# sensor 1 = Frequency 1 conductivity, primary, 2887, 18-Oct-07, cpcor = -9.5700e-08
# sensor 2 = Frequency 2 pressure, 209, 09-Jul-07
# sensor 3 = Frequency 3 temperature, secondary, 1455, 13-Nov-07
# sensor 4 = Frequency 4 conductivity, secondary, 2882, 18-Oct-07, cpcor = -9.5700e-08
# sensor 5 = Extrnl Volt 0 Oxygen, SBE, primary, 315, 16-Oct-07p
# sensor 6 = Extrnl Volt 3 userpoly 0, 8756
# sensor 7 = Extrnl Volt 4 irradiance (PAR), primary, 4623, N/A
# sensor 8 = Extrnl Volt 6 WET Labs, WETStar fluorometer, ws3s-418P, 7/9/98
# datcnv_date = May 13 2009 13:16:53, 7.18c
# datcnv_in = C:cygwinhome mckeeSO-GasExge03.hex C:cygwinhome mckeeSO-GasExge03.CON
# datcnv_skipover = 0
# datcnv_ox_hysteresis_correction = no
# datcnv_ox_tau_correction = yes
# file_type = ascii
*END*
See: SO-GasEx cruise report, Section 5.7 ppgs 36-46
BCO-DMO Processing Notes
- Generated from original files ge01-ge51.ctd
BCO-DMO Edits
- spaces in files replaced with tabs
- BCO-DMO formatted header record inserted into files
| File |
|---|
CTD_Profiles.csv (Comma Separated Values (.csv), 2.54 MB) MD5:2dcf52c2b2d8e46a15f6cd14704509fe Primary data file for dataset ID 3126 |
| Parameter | Description | Units |
| date | Date UTC | YYYYMMDD |
| time | Time UTC | HHMM |
| lat | latitude, negative denotes South | decimal degrees |
| lon | longitude, negative denotes West | decimal degrees |
| event | Unique event number | YDAHHMM |
| station | SO-GasEx CTD Station Id | integer |
| Pmax | pressure, maximum during cast | decibars |
| PRES | pressure from CTD | decibars |
| T168 | temperature from CTD, IPTS-68 | degrees Celsius |
| CND1 | conductivity from CTD | milli Siemens/centimeter |
| OXY | oxygen, dissolved from SBE 43 | micro moles/kilogram |
| SAL1 | salinity, from CTD, PSS-78 (PSU) | dimensionless |
| NBIN | (tbd) | (tbd) |
| IQL | (tbd) | (tbd) |
| Dataset-specific Instrument Name | CTD Seabird 911plus |
| Generic Instrument Name | CTD Sea-Bird SBE 911plus |
| Dataset-specific Description | Instrument Configuration File for SO-GasEx:
PSA file: C:GasExacqSeasave.psa
Date: 02/23/2008
Instrument configuration file: C:GasExconssec_24_1.con
Configuration report for SBE 911plus/917plus CTD
------------------------------------------------
Frequency channels suppressed : 0
Voltage words suppressed : 0
Computer interface : RS-232C
Scans to average : 1
Surface PAR voltage added : No
NMEA position data added : No
Scan time added : Yes
1) Frequency 0, Temperature
Serial number : 4211
Calibrated on : 08-Nov-07
G : 4.38706278e-003
H : 6.46536683e-004
I : 2.23272060e-005
J : 1.77872902e-006
F0 : 1000.000
Slope : 1.00000000
Offset : 0.0000
2) Frequency 1, Conductivity
Serial number : 2887
Calibrated on : 18-Oct-07
G : -1.00439325e+001
H : 1.36330343e+000
I : -2.56289727e-003
J : 2.54823008e-004
CTcor : 3.2500e-006
CPcor : -9.57000000e-008
Slope : 1.00000000
Offset : 0.00000
3) Frequency 2, Pressure, Digiquartz with TC
Serial number : 209
Calibrated on : 09-Jul-07
C1 : -3.920451e+004
C2 : 6.234560e-001
C3 : 1.350570e-002
D1 : 3.894300e-002
D2 : 0.000000e+000
T1 : 3.046303e+001
T2 : -9.018862e-005
T3 : 4.528890e-006
T4 : 3.309590e-009
T5 : 0.000000e+000
Slope : 0.99985000
Offset : 1.00090
AD590M : 1.144000e-002
AD590B : -8.805040e+000
4) Frequency 3, Temperature, 2
Serial number : 1455
Calibrated on : 13-Nov-07
G : 4.84617647e-003
H : 6.77841857e-004
I : 2.60561588e-005
J : 2.02936086e-006
F0 : 1000.000
Slope : 1.00000000
Offset : 0.0000
5) Frequency 4, Conductivity, 2
Serial number : 2882
Calibrated on : 18-Oct-07
G : -1.02006582e+001
H : 1.39961765e+000
I : 7.01158866e-004
J : 2.20787100e-005
CTcor : 3.2500e-006
CPcor : -9.57000000e-008
Slope : 1.00000000
Offset : 0.00000
6) A/D voltage 0, Oxygen, SBE 43
Serial number : 315
Calibrated on : 16-Oct-07p
Equation : Owens-Millard
Coefficients for Owens-Millard:
Soc : 3.6150e-001
Boc : 0.0000
Offset : -0.5838
Tcor : -0.0001
Pcor : 1.35e-004
Tau : 0.0
Coefficients for Murphy-Larson:
Soc : 0.00000e+000
Offset : 0.00000e+000
A : 0.00000e+000
B : 0.00000e+000
C : 0.00000e+000
E : 0.00000e+000
Tau : 2.00000e+000
7) A/D voltage 1, Free
8) A/D voltage 2, Free
9) A/D voltage 3, User Polynomial
Serial number : 8756
Calibrated on :
Sensor name : Metrox
A0 : 12.00000000
A1 : 445.60000000
A2 : 0.00000000
A3 : 0.00000000
10) A/D voltage 4, Free
11) A/D voltage 5, Free
12) A/D voltage 6, Free
13) A/D voltage 7, Free
---------------------------------------------
Pump Control
This setting is only applicable to a custom build of the SBE 9plus.
Enable pump on / pump off commands: NO
---------------------------------------------
Data Acquisition:
Archive data: YES
Delay archiving: NO
Data archive: C:P18_07data
h21731.hex
Timeout (seconds) at startup: 20
Timeout (seconds) between scans: 20
---------------------------------------------
Instrument port configuration:
Port = COM1
Baud rate = 19200
Parity = N
Data bits = 8
Stop bits = 1
---------------------------------------------
Water Sampler Data:
Water Sampler Type: SBE Carousel
Number of bottles: 24
Port: COM2
Enable remote firing: NO
Firing sequence: Sequential
---------------------------------------------
Header information:
Header Choice = Prompt for Header Information
prompt 0 = Cruise: CLIVAR P18 2007
prompt 1 = Ship: NOAA RONALD H. BROWN
prompt 2 = Station/Cast Number:
prompt 3 = Nominal Latitude:
prompt 4 = Nominal Longitude:
---------------------------------------------
TCP/IP - port numbers:
Data acquisition:
Data port: 49163
Status port: 49165
Command port: 49164
Remote bottle firing:
Command port: 49167
Status port: 49168
Remote data publishing:
Converted data port: 49161
Raw data port: 49160
---------------------------------------------
Miscellaneous data for calculations
Depth and Average Sound Velocity
Latitude when NMEA is not available: 0.00000000
Average Sound Velocity
Minimum pressure [db]: 20.00000000
Minimum salinity [psu]: 20.00000000
Pressure window size [db]: 20.00000000
Time window size [s]: 60.00000000
Descent and Acceleration
Window size [s]: 2.00000000
Plume Anomaly
Theta-B: 0.00000000
Salinity-B 0.00000000
Theta-Z / Salinity-Z 0.00000000
Reference pressure [db] 0.00000000
Oxygen
Window size [s]: 2.00000000
Potential Temperature Anomaly
A0: 0.00000000
A1: 0.00000000
A1 Multiplier: Salinity
---------------------------------------------
Serial Data Output:
Output data to serial port: NO
---------------------------------------------
Mark Variables:
Variables:
Digits Variable Name [units]
------ ---------------------
0 Scan Count
4 Pressure, Digiquartz [db]
5 Temperature [ITS-90, deg C]
5 Salinity [PSU]
4 Oxygen, SBE 43 [umol/Kg]
5 Density [sigma-theta, Kg/m^3]
---------------------------------------------
Shared File Output:
Output data to shared file: NO
---------------------------------------------
TCP/IP Output:
Raw data:
Output raw data to socket: NO
XML wrapper and settings: NO
Seconds between raw data updates: 0.00000000
Converted data:
Output converted data to socket: NO
XML format: NO
---------------------------------------------
SBE 11plus Deck Unit Alarms
Enable minimum pressure alarm: NO
Enable maximum pressure alarm: NO
Enable altimeter alarm: NO
---------------------------------------------
SBE 14 Remote Display
Enable SBE 14 Remote Display: NO
---------------------------------------------
Options:
Prompt to save program setup changes: YES
Automatically save program setup changes on exit: NO
Confirm instrument configuration change: YES
Confirm display setup changes: YES
Confirm output file overwrite: YES
Check scan length: YES
Compare serial numbers: YES
Maximized plot may cover Seasave: NO |
| Generic Instrument Description | The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics |
| Website | |
| Platform | NOAA Ship Ronald H. Brown |
| Report | |
| Start Date | 2008-02-29 |
| End Date | 2008-04-12 |
| Description | The Southern Ocean GasEx experiment was conducted aboard the NOAA ship Ronald H. Brown with 31 scientists representing 22 institutions, companies and government labs. The cruise departed Punta Arenas, Chile on 29 February, 2008 and transited approximately 5 days to the nominal study region at 50°S, 40°W in the Atlantic sector of the Southern Ocean. The scientific work concentrated on quantifying gas transfer velocities using deliberately injected tracers, measuring CO2 and DMS fluxes directly in the marine air boundary layer, and elucidating the physical, chemical, and biological processes controlling air-sea fluxes with measurements in the upper-ocean and marine air. The oceanic studies used a Lagrangian approach to study the evolution of chemical and biological properties over the course of the experiment using shipboard and autonomous drifting instruments. The first tracer patch was created and studied for approximately 6 days before the ship was diverted from the study site, 350 miles to the south, to wait near South Georgia Island for calmer seas. After more than 4 days away, we returned to the study area and managed to find some remnants of the tracer patch. After collecting one final set of water column samples and recovering the two drifting buoys deployed with the patch, we relocated to the northwest, closer to the area where the first patch was started. A second tracer patch was created and studied for approximately 15 days before we had to break off the experiment and transit to Montevideo, Uruguay for the completion of the cruise. |
The Southern Ocean Gas Exchange Experiment (SO-GasEx; also known as GasEx III) took place in the Southwest Atlantic sector of the Southern Ocean (nominally at 50°S, 40°W, near South Georgia Island) in austral fall of 2008 (February 29-April 12, 2008) on the NOAA ship Ronald H. Brown. SO-GasEX is funded by NOAA, NSF and NASA.
The research objectives for Southern Ocean GasEx are to answer the following questions:
SO-GasEx cruise report
SO-GasEx Science Plan
SO-GasEx Implementation Plan
The SO-GasEx cruise report and Science and Implementation plans, may also be available at the SO-GasEx science Web page.
The Ocean Carbon and Biogeochemistry (OCB) program focuses on the ocean's role as a component of the global Earth system, bringing together research in geochemistry, ocean physics, and ecology that inform on and advance our understanding of ocean biogeochemistry. The overall program goals are to promote, plan, and coordinate collaborative, multidisciplinary research opportunities within the U.S. research community and with international partners. Important OCB-related activities currently include: the Ocean Carbon and Climate Change (OCCC) and the North American Carbon Program (NACP); U.S. contributions to IMBER, SOLAS, CARBOOCEAN; and numerous U.S. single-investigator and medium-size research projects funded by U.S. federal agencies including NASA, NOAA, and NSF.
The scientific mission of OCB is to study the evolving role of the ocean in the global carbon cycle, in the face of environmental variability and change through studies of marine biogeochemical cycles and associated ecosystems.
The overarching OCB science themes include improved understanding and prediction of: 1) oceanic uptake and release of atmospheric CO2 and other greenhouse gases and 2) environmental sensitivities of biogeochemical cycles, marine ecosystems, and interactions between the two.
The OCB Research Priorities (updated January 2012) include: ocean acidification; terrestrial/coastal carbon fluxes and exchanges; climate sensitivities of and change in ecosystem structure and associated impacts on biogeochemical cycles; mesopelagic ecological and biogeochemical interactions; benthic-pelagic feedbacks on biogeochemical cycles; ocean carbon uptake and storage; and expanding low-oxygen conditions in the coastal and open oceans.
The Surface Ocean Lower Atmosphere Study (SOLAS) program is designed to enable researchers from different disciplines to interact and investigate the multitude of processes and interactions between the coupled ocean and atmosphere.
Oceanographers and atmospheric scientists are working together to improve understanding of the fate, transport, and feedbacks of climate relevant compounds, and also weather and hazards that are affected by processes at the surface ocean.
Oceanographers and atmospheric scientists are working together to improve understanding of the fate, transport, and feedbacks of climate relevant compounds.
Physical, chemical, and biological research near the ocean-atmosphere interface must be performed in synergy to extend our current knowledge to adequately understand and forecast changes on short and long time frames and over local and global spatial scales.
The findings obtained from SOLAS are used to improve knowledge at process scale that will lead to better quantification of fluxes of climate relevant compounds such as CO2, sulfur and nitrogen compounds, hydrocarbons and halocarbons, as well as dust, energy and momentum. This activity facilitates a fundamental understanding to assist the societal needs for climate change, environmental health, weather prediction, and national security.
The US SOLAS program is a component of the International SOLAS program where collaborations are forged with investigators around the world to examine SOLAS issues ubiquitous to the world's oceans and atmosphere.
» International SOLAS Web site
US-SOLAS (4 MB PDF file)
Other SOLAS reports are available for download from the US SOLAS Web site
| Funding Source | Award |
|---|---|
| National Oceanic and Atmospheric Administration (NOAA) | |
| National Aeronautics & Space Administration (NASA) | |
| National Science Foundation (NSF) |